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Re: Legendre Polynomials
In evaluating Legendre (and other) polynomials and polynomial sums for large orders or arguments with an earlier version of Mathematica (maybe 3 or 4?) I encountered what I took to be round-off errors when using real arguments, which disappeared when I limited myself to integer or rational arguments. If I wanted to evaluate one of these functions for an argument of 1.001, I used 1001/1000 as the argument and the obvious errors went away.